Keeper: Duly noted
As far as attaching on and off a Glock (22 I assume?) it is no worries, and intuitive. Of course it goes without saying that proper training and a fair bit of muscle memory is involved here for safe operation.
For holsters that don't take the pistol with the light mounted, this solution is available
http://www.copsplus.com/prodnum2480.php (link only for model, i've never dealt with that company before) to allow deployment. Downside to this though is that rapid reholster is not really possible, which for your usage could be a determining factor. With a dedicated holster it is absolutely GTG. It can be utilised quite effectively also in the alternative technique although it is something you need to consider. If you want to order this ask the boys at CRM in Cairns and they will look after you, they are good blokes.
As far as rechargables on these two lights none are known to me at this time. I appreciate budget is a concern, but this is one place not to 'cheap out' so to speak for duty use.
For you it is a tax deduction (?), and the benefits in reliability and dependability in the SF123's are well worth changing batteries every so often. Issues like self-discharge, risk of battery venting, incorrect voltage for emitter, leaking batteries and increased risk of failure when you need it come to mind... SF123's can last years, close to a decade even and still be GTG when installed in a light. SF123's aren't too pricey either, especially when compared with energizers and duracells in chemists here ($12 - 16 each).
Firearm recoil also has an affect here, so design of the batteries and proven reliability is also important. There is a reason there is very little speak of rechargables on weaponlights apart from hobbyists on cpf etc.
I would suggest that you would use the x200a substantially less than say your Wolf Eyes and other lights. This is because using the light on the pistol becomes part of the use of force continuum and something you would only use in an elevated threat environment (or as a handheld backup if your primary light goes down)... Also the tactical use of white light (especially in conjunction with a rechargable handheld
) would further reduce the actual time the x200 is run. This could also help ease concerns on operating cost?
If you don't already have a battery tester, Cairns should have a Jaycar shop? The good one will let you know how far your sf123's have been drained. You learn pretty quick after the first used set when you should change batteries...